This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
A New 2.3L DOHC Engine with Balance Shaft Housing - Steps of Refinement and Optimization
Annotation ability available
Sector:
Language:
English
Abstract
Ford introduced a new in-line 4-cylinder 2.3L DOHC 16-valve engine in its European D-class Scorpio vehicle. The engine is based on the proven 2.0L-DOHC engine with 8 or 16 valves. The new engine replaces the 2.0L DOHC 8-valve version.
Primary focus of the development of this new 2.3L engine was on the noise and vibration improvement, both for the engine and for the vehicle interior noise. One measure to achieve this target was the application of balance shafts.
In this paper, the development of the new engine will be described from the design stage to the production version. It will focus on the design of the balance shaft housing and all relevant engine NVH features. The various stages of the design and detailed optimization are explained. The NVH prediction by CAE methods is verified with experimental results. The influence of optimized components like the oil pan, front cover and the chain tensioner on the noise behavior will be discussed. Finally, test bed and vehicle measurements are presented.
In the final version, the overall noise level of the new 2.3L engine is reduced by up to 4 dBA compared to the 2.0L engine, that means a 60 % noise improvement. With the concept of balance shafts a benefit of almost 70 % on the second engine order level at the engine mounts is achieved. In comparison to the state-of-the-art (i.e. range of similar engines) the new engine is very close to being „best-in-class” in the noise behavior.
Authors
Topic
Citation
Huegen, S., Warren, G., Menne, R., Wolschendorf, J. et al., "A New 2.3L DOHC Engine with Balance Shaft Housing - Steps of Refinement and Optimization," SAE Technical Paper 970921, 1997, https://doi.org/10.4271/970921.Also In
References
- Brandstetter W. Wallbrueck B. Sweet T. Hansen J. Der 2.0L 16V Motor für den neuen Ford Escort RS2000 (The 2.0L 16V engine for the new Ford Escort RS2000) MTZ 52 1991 10
- Brandstetter W. Schwarz P. Thusch A. Die 2,0L-DOHC Motoren für Ford Sierra und Scorpio (The 2.0L-DOHC Engines for Ford Siera and Scorpio) MTZ 50 1989 9
- Menne R. Heuser G. Gruenert T. Die Entwicklung und der aktuelle technologische Stand des Ford Zetec-SE (The development and the current technological status of the Ford Zetec-SE) 17 th International Engine Symposium Vienna 1996
- Honda Prelude Automotive Engineering March 1992
- Breitwieser K. Hofmann M. Jacobs H. Verter U. Der neue Vierventilmotor mit 2,2 l Hubraum fuer den Opel Sintra (The new Four Valve Engine with 2.2L Capacity for the Opel Sintra) MTZ 57 1996 9
- Querengässer J. Meyer J. Wolschendorf J. Nehl J. NVH Optimization of an In-Line 4-Cylinder Powertrain SAE 951294
- Busch G. Maurell R. Meyer J. Investigations on Influence of Engine Block Design Features on Noise and Vibration SAE 911071
- Schmillen K. Schwaderlapp M. Wolschendorf J. Primary Noise Reduction Measures on IDI Diesel Engines SAE 931309
- Schmillen K. Schwaderlapp M. Spessert B. Verbesserung des akustischen Verhaltens von Motorblöcken (Improvement of Acoustical Engine Block Behaviour) MTZ 53 1992 4